Syracuse & Utica 4-4-0 "American" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 9683)

Data from John Weale, Benjamin Franklin Isherwood, Edward Dobson, Ensamples of Railway Making: Which, Although Not of English Practice, are Submitted, with Practical Illustrations, to the Civil Engineer, and the British and Irish Public (Architectural library, 1843), p. xxi.

Boiler pressure is a Locobase estimate. Similar to the 4-2-0 shown in Locobase 9682, this engine was intended to draw "very heavy loads" at 15-18 mph. The authors cited a connection between the drivers and the truck "...ingeniously arranged to throw either more or less weight on the principal driving wheels."

NB: Evaporative heating surface area estimate derived by adding reported direct heating surface to calculated tube heating surface

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID9683
RailroadSyracuse & Utica
Number in Class1
Road Numbers
Number Built1
BuilderRogers, Ketchum & Grosvenor
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)15,833 / 7182
Engine Weight (lbs / kg)22,351 / 10,138
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)13 / 6.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)50 / 3.40
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)2040 / 925.33
Factor of Adhesion (Weight on Drivers/Tractive Effort) 7.76
Heating Ability
Firebox Area (sq ft / m2)42 / 3.90
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)544
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)544
Evaporative Heating Surface/Cylinder Volume230.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area2100
Power L11440
Power MT401.02

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Wes Barris